Hawthorne, J, Whittaker, M, Arkless, L et al. (1 more author) (2013) Assessing the physical suitability of different immobilisation grouts for LLW and ILW encapsulation. In: Proceedings. 33 rd Cement and Concrete Science Conference, 02-04 Sep 2013, Portsmouth, UK.
Abstract
The issue of legacy wastes from early civil nuclear operations is vast, complex and multifaceted. Variations in composition, radioactivity and state (liquid, solid or a combination) mean that a ‘toolbox’ of different systems is required to provide appropriate conditioning prior to final disposal. For Low level waste (LLW) and Intermediate level waste (ILW), the preferred method in the UK is encapsulation in a cementitious matrix. This study has been performed to assess the physical performance of one such grout in comparison to potential replacements in order to determine their potential suitability. This work aims to define a set of physical tests which may be applied as a precursor to more rigorous assessment of future grouting systems. Samples were prepared at varying cement:replacement and water:binder ratios, as shown in Table 1, in accordance with current practice in industry and to ensure suitable workability and setting time. Following curing at 20°C ±1°C and 98% RH for 28 days, UCS, permeability, sorptivity and Acid neutralising capacity (ANC) were measured with further characterisation via SEM-BSE and simultaneous thermal analysis (STA).
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) > Institute for Resilient Infrastructure (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 10 Aug 2016 11:45 |
Last Modified: | 31 Jan 2018 06:37 |
Status: | Published |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:96943 |